The influence of crustal rheology on plate subduction based on numerical modeling results |
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| Authors: | O P Polyansky S N Korobeynikov V G Sverdlova A V Babichev V V Reverdatto |
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| Institution: | (1) Faculty of Earth and Life Sciences, Netherlands Research Centre for Integrated Solid Earth Science, VU University, Amsterdam, The Netherlands;(2) Helmholtz-Zentrum Potsdam, Deutsches GeoforschungsZentrum (GFZ), Potsdam, Germany |
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| Abstract: | Computer simulation of subduction was performed using nonlinear equations of deformable solid mechanics encompassing all types
of nonlinearity: geometric, physical, and contact. This study presents a numerical model of subduction with allowance for
the gabbro-to-eclogite phase transition. The model rheology is a plastic compressible material (Mohr-Coulomb law for a deformed
rock material). It was shown that deep subduction can be modeled well with the selection of appropriate parameters of rock
plasticity providing the initial thickening in the subducting slab nose. |
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